List questions from equivalence-relations

Published on 30 Apr 2026 - 10:13

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Number of subsets, relations etc of a set

Published on 06 May 2026 - 11:25

140

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Number of possible equivalence relations

Published on 29 Apr 2026 - 12:28

113

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Why is $p(z) = \frac{e^z}{1 + e^z} \color{red}{\equiv} \frac{1}{1 + e^{-z}}$ and not $=$?

Published on 03 May 2026 - 17:39

65

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Simple question about relations

Published on 10 May 2026 - 9:42

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Total number of equivalence class for a set

Published on 29 Apr 2026 - 12:29

58

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Is this an equivalence relation and explaination?

Published on 10 May 2026 - 9:49

62

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Partition of a set identified by a equivalence relation

Published on 04 May 2026 - 4:04

82

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Define an equivalence relation on $\{ 1,2,3,4 \}^2$ by: (, )(, ) if ⋅ = ⋅ . How many equivalence classes are there?

Published on 04 May 2026 - 4:02

174

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Prove that $\sum_{i=1}^n\lvert[a_i]\rvert$ is even iff $n$ is even

Published on 05 May 2026 - 4:04

223

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Pertaining to the Cardinality of $A$ modulo $R$ for finite $A$.

Published on 05 May 2026 - 11:59

381

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Symmetric difference as a equivalent relation-equivalence classes

Published on 10 May 2026 - 13:47

62

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An equivalence relation on $\mathbb{R}^2\setminus \{(0,0)\}$ (Resolved)

Published on 05 May 2026 - 4:08

60

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Basic algebra exercise

Published on 10 May 2026 - 12:29

251

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Question about a specific equivalence relation induced by a diffeomorphism

Published on 05 May 2026 - 2:06

List Question

Relations of equivalence...

Number of subsets, relations etc of a set

Number of possible equivalence relations

Why is $p(z) = \frac{e^z}{1 + e^z} \color{red}{\equiv} \frac{1}{1 + e^{-z}}$ and not $=$?

Simple question about relations

Total number of equivalence class for a set

Is this an equivalence relation and explaination?

Partition of a set identified by a equivalence relation

Define an equivalence relation on $\{ 1,2,3,4 \}^2$ by: (, )(, ) if ⋅ = ⋅ . How many equivalence classes are there?

Prove that $\sum_{i=1}^n\lvert[a_i]\rvert$ is even iff $n$ is even

Pertaining to the Cardinality of $A$ modulo $R$ for finite $A$.

Symmetric difference as a equivalent relation-equivalence classes

An equivalence relation on $\mathbb{R}^2\setminus \{(0,0)\}$ (Resolved)

Basic algebra exercise

Question about a specific equivalence relation induced by a diffeomorphism

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